Firearm receiver



FIG. 1 is a front left perspective view of a firearm receiver.

FIG. 2 is a left side view of the firearm receiver of FIG. 1.

FIG. 3 is a right side view of the firearm receiver of FIG. 1.

FIG. 4 is a front view of the firearm receiver of FIG. 1.

FIG. 5 is a rear view of the firearm receiver of FIG. 1.

FIG. 6 is a top view of the firearm eceiver of FIG. 1.

FIG. 7 is a bottom view of the firearm receiver of FIG. 1; and,

FIG. 8 is a rear right perspective view of the firearm receiver of FIG. 1.

The broken lines shown in the figures depict portions of the firearm receiver that form no part of the claimed design. 

CLAIM The ornamental design for a firearm receiver, as shown and described. 